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    • 8. 发明授权
    • Self-lubricated and-adjusted piston ring
    • 自润滑和调节的活塞环
    • US6113107A
    • 2000-09-05
    • US43577
    • 1998-05-26
    • Baodong WangPing CaiChuansi XueYumin ZhangXiaoshan Cai
    • Baodong WangPing CaiChuansi XueYumin ZhangXiaoshan Cai
    • F02F5/00F16J9/10F16J9/16F16J9/20
    • F16J9/10F16J9/20
    • This invention relates to piston compression ring assemblies, each of which consists of a main ring element and an auxiliary ring element. The assemblies can by themselves adjust the radial gaps between the assemblies and the liner, and the gaps between the assemblies and the liner, and the gaps between the assemblies and the wall of the ring groove in the piston. The two ring elements engage with each other on their flat sides, and there is a notch for accommodating lubrication oil provided in the engaging portion. The radial cuts in each ring element stagger each other by an angle of 180.degree.. The two ring elements are good sealing and lubricating, respectively, therefore they can reduce the leakage of gas and the compensation of oil, and have a long period of use. They can thus improve the efficiency and the power of internal combustion engine, and reduce the emission and the noise of the internal combustion engine.
    • PCT No.PCT / CN96 / 00030 Sec。 371日期:1998年5月26日 102(e)日期1998年5月26日PCT提交1996年5月3日PCT公布。 公开号WO97 / 12139 日期1997年4月3日本发明涉及活塞压缩环组件,每个活塞压缩环组件由主环形元件和辅助环形元件组成。 组件本身可以调节组件和衬套之间的径向间隙,以及组件和衬套之间的间隙,以及组件之间的间隙和活塞中的环槽的壁。 两个环形元件在其平坦侧面彼此接合,并且存在用于容纳设置在接合部分中的润滑油的凹口。 每个环形元件的径向切口彼此交错180°。 两个环形元件分别具有良好的密封和润滑性,因此可以减少气体的泄漏和油的补偿,并且使用时间长。 因此,能够提高内燃机的效率和功率,并且能够降低内燃机的排放和噪音。
    • 10. 发明授权
    • Wellhead rotating breech lock and method
    • 井口旋转后膛锁和方法
    • US08763708B2
    • 2014-07-01
    • US12902997
    • 2010-10-12
    • Todd TravisScott MenardBrandon M. CainPing CaiMichael Mosher
    • Todd TravisScott MenardBrandon M. CainPing CaiMichael Mosher
    • E21B19/02E21B33/04
    • E21B33/0415E21B43/121E21B43/126
    • A rotating breech lock rotates tubing to distribute wear caused by a rotating or reciprocating rod of an artificial lift system. The rotating breech lock has a spool that disposes on a wellhead. A bowl element disposes in the spool's bore, and a hanger fits into the spool and lands on the bowl element with a thrust bearing. Above the hanger, a load ring fits against the hanger with a bearing, and a hold-down sleeve and locking pins hold the load ring against the hanger. The spool has a worm that mates with a wheel defined about the hanger so turning the worm by a ratchet or other mechanism rotates the hanger. Internally, the hanger has a bore with opposing shoulders separated by gaps. A mandrel couples to the tubing and disposes up into the hanger. Protrusions or keys on the hanger can selectively align with the gaps and the shoulders depending on how the mandrel is rotated in the hanger bore.
    • 旋转后膛锁旋转管道以分配由人造举升系统的旋转或往复杆引起的磨损。 旋转后膛锁具有置于井口上的阀芯。 碗形元件配置在卷轴的孔中,并且衣架装配到卷轴中并且用推力轴承落在碗形元件上。 在衣架上方,一个负载环用一个轴承装在衣架上,一个压紧套和一个锁定销把负载环固定在衣架上。 阀芯具有与围绕吊架限定的车轮匹配的蜗杆,因此通过棘轮或其它机构转动蜗杆使衣架旋转。 在内部,衣架有一个孔,相对的肩膀被间隙分开。 芯棒连接到管道上并放置在衣架中。 吊架上的突起或钥匙可以根据心轴如何在衣架孔中旋转而选择性地与间隙和肩部对准。